Li Yiheng's worries were unnecessary, because after the top of the city was closed, he heard Liya's voice, "Turn on the second defense system." Pen Fun Pavilion wWw. ｂiquge。 ｉｎfo”

Immediately, a mechanical sound sounded, and Li Yiheng felt that the place where he was was moving, looking at the direction, he was moving towards it. Not only is the place where Li Yiheng is moving, but the place where Liya, Lisa and others are also moving. When everyone is about 20 meters away from the wall, the movement stops.

Immediately, Li Yiheng saw a ballista rise from the place where he had just stayed. Count and there are ten arrows on it, no, it's not so much an arrow as a spear.

If you look at other places, there is a station shed of about 20 square meters every 50 meters, which can probably accommodate more than a dozen people. The middle of the station shed is lined with ballistae, bed crossbows, and other weapons suitable for long-range attacks, and in some places there are laterally rotating stone throwers.

The stone thrower is different from what Li Yiheng has seen before, not so much a stone thrower, but a horizontal windmill. The bearings of the catapult are about two meters high, and there are a total of six lever arms, each with a handle underneath it. It seems that this kind of stone throwing machine is to be pushed and rotated underneath, and the centrifugal force generated by the rotation is used to throw stones.

But in this case, how can we ensure that the stones are thrown out without harming our own people? Li Yiheng couldn't understand the trick, and he didn't think much about it, anyway, they would be able to see it after a while.

There is also a place where it is a forked pole. At one end of the pole are two strands of sharp iron forks, presumably used to stab enemies. Many sea creatures rely on the movement of water waves and the smell of blood to feed, and if one of them accidentally bleeds from a fork wound, the others will eat it.

Li Yiheng looked at the fork pole and shook his head, this move was too ruthless.

Just as Li Yiheng was searching for any other weapons, there was a sound in the sky. Li Yiheng looked up and saw that it was a good guy, it was a Yaksha. To put it bluntly, the Yaksha is a pillar stone full of spikes, and as for its function, it should be the same as a fork rod.

When the yaksha is thrown, it will stab the body of the fish, and the blood will flow out, which will naturally attract other animals to eat the injured animal.

There are other weapons that Li Yiheng didn't see, but as far as he sees these now, Mantis's strategy against the enemy is to let the enemy kill each other.

It's a bit cruel, but if you don't be cruel to the enemy, then the enemy is the only one left to be cruel to you.

High up, stone pillars of different lengths stretched out from the wall, and the originally empty sky was immediately filled with staggered stone pillars.

Although there was water in the city, the pressure of the water was strong enough to withstand ordinary attacks. But just in case, it's safest to fill the entire box. Of course, the so-called filling is not really filling, as it is now, when the stone pillars intertwined together to form an infinite number of triangles. The stability of the triangle is fully utilized.

"Boom-"

There was a muffled sound that the giant creatures must have arrived, crashing against the outer walls.

"Open!" Liya ordered, and there was another sound, and many square holes of different sizes were opened in the wall. Each hole corresponds to a weapon.

"Attack!" Leah ordered again. There was a "boom" as the weapons headed towards their respective holes, outside the walls, at the enemies who had invaded their homes.

Li Yiheng knew how to use other weapons, but he didn't understand how to use the horizontal stone thrower. So now he just stared at the horizontal stone thrower, to see how the merfolk controlled the horizontal stone thrower.

I saw a mermaid standing in front of the square hole, holding a ball full of spikes in his hand, I don't know what material it is, but it doesn't look light. The mermaid holding the handle and turning the lever gradually increased its speed, and the six lever arms slashed in front of the square hole in turn.

It seemed that he felt that the speed was about the same, and as soon as the mermaid holding the ball loosened his hand, the ball fell, and it was just hit by the lever arm that turned around, passed through the square hole, and flew straight out.

Then, one by one, the merfolk released the balls, and one by one they were accurately hit by the turned lever arm, and flew through the square hole to the outside of the city wall to attack the enemy.

These two must have cooperated for a long time, and none of the balls missed, and such a high degree of tacit understanding must have been practiced for a long time.

After understanding the use of the transverse stone thrower, Li Yiheng no longer stared at it. Turning his head to see how other weapons were used, he realized that Mantis was simply a sophisticated mechanical city.

Li Yiheng originally thought that the spears and arrows on the ballista were controlled by the mermaid and then shot out, and the fork rod was also controlled by the mermaid to stretch out to stab the enemy, and the yaksha on it also had to be controlled by man. But in fact, they are neither, although these are also controlled by manpower, they are extremely sophisticated machines.

Take the ballista as an example, the arrows on the normal ballista will be shot out when they are shot, and they don't know if they can shoot or not, and they don't know where they will shoot. But as long as Mantis's arrows and crossbows are shot, there are traces to follow, and those that hit the target will stay on the target, and the arrows that can't shoot the target will automatically turn around.

The tail of the arrow is equipped with a three-bladed paddle, which rotates when shot, which can not only form the power of the arrow forward, but also grasp the range of the arrow. When the arrow flies a certain distance, if it hits the target, it is fine, if it does not hit, the arrow will turn around and fly back to the starting point.

The merfolk who operate the ballista only need to collect the arrows that fly back and place them on the crossbow strings to fill in the missing numbers.

There is also a fork rod, the tail of the fork rod is equipped with a telescopic machine, and a fork rod is stretched out and retracted in turn, which is simply a moving nail board, so that the enemy outside is unable to guard against it.

After about two hours, Leah shouted crisply, "Stop!"

All the machines stopped moving at her command. The degree of uniformity made Li Yiheng dumbfounded again, "Could this be all voice-controlled?"

Leah strode over to the fence and opened a window to observe the situation outside.

Li Yiheng couldn't see the situation outside, and could only judge from the expression on Liya's face. Lea's brows furrowed slightly, obviously not very satisfied with the results.

But it's just that she's not satisfied, what Lia is not satisfied with is not actually the result of the attack, but the carnivorous speed of those carnivorous fish outside, so far, there is not a single fish that has not been eaten.

The fish outside were all wounded, and they were now only concerned with sharing their food, and they didn't care about attacking Mantiz again. The end result is only a matter of time.

Leah closed the window and ordered again, "From now on, rest in place and don't leave without permission." ”

"Yes, princess!" the merfolk warriors replied in unison, and then all the merfolk really lay down on the spot, closed their eyes, and probably closed their eyes to recuperate.

Li Yiheng looked at the mermaids lying down around him, wondering whether he should lie down with him, and inadvertently saw Liya not far away. Liya flew over with an eye knife, and Li Yiheng hurriedly followed the example of other mermaids, lying on the ground, closing his eyes and recuperating.

Li Yiheng had to admit that although Liya didn't look at herself very well many times, Liya was definitely a qualified royal princess, and she was a heroine who didn't let the bearded man have the stubble. I remembered that I saw Lisa and Lini wearing armor before, although they were also heroic, but compared to Liya, they still had less momentum. Perhaps, this is the difference between the eldest sister and the younger sister.